ASAHI KASEI [AK4359]
MS0289-E-00 2004/02
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GENERAL DESCRIPTION
The AK4359 is eight channels 24bit DAC corresponding to digital audio system. Using AKM's advanced
multi bit architecture for its modulator the AK4359 delivers a wide dynamic range while preserving
linearity for improved THD+N performance. The AK4359 has single end SCF outputs, increasing
performance for systems with excessive clock jitter. The AK4359 accepts 192kHz PCM data, ideal for a
wide range of applications including DVD-Audio.
FEATURES
† Sampling Rate Ranging from 8kHz to 192kHz
† 24Bit 8 times Digital Filter with Slow roll-off option
† THD+N: -94dB
† DR, S/N: 106dB
† High Tolerance to Clock Jitter
† Single Ended Output Buffer with 2nd order Analog LPF
† Digital De-emphasis for 32, 44.1 & 48kHz sampling
† Zero Detect function
† Channel Independent Digital Attenuator (Linear 256 steps)
† 3-wire Serial and I
2
C Bus µP I/F for mode setting
† I/F format: MSB justified, LSB justified (16bit, 20bit, 24bit), I
2
S, TDM
† Master clock: 256fs, 384fs, 512fs or 768fs or 1152fs (Normal Speed Mode)
128fs, 192fs, 256fs or 384fs (Double Speed Mode)
128fs or 192fs (Quad Speed Mode)
† Power Supply: 4.5 to 5.5V
† 30pin VSOP Package













SCF DAC DATT
DZF
LOUT1
SCF DAC DATT
ROUT1
SCF DAC DATT
LOUT2
SCF DAC DATT
ROUT2
SCF DAC DATT
LOUT3
SCF DAC DATT
ROUT3
Audio
I/F
Control
Register
AK4359
MCLK
LRCK
BICK
3-wire
or I2C
SDTI1
SDTI2
SDTI3
PCM
SCF DAC DATT
LOUT4
SCF DAC DATT
ROUT4
SDTI4
LPF
LPF
LPF
LPF
LPF
LPF
LPF
LPF

192kHz 24-Bit 8ch DAC
AK4359